4.6is - trans fluid filter change, diff and transfer case fluid change

[lps5053]

Hello all,

I will be taking the x on its longest trip of my ownership (approx. 350 miles round trip) and I want to be covered completely. I just dropped $3100 in maintenance (valley pan, vcg, osv, pcv/ccv, hoses, vacuum lines, motor mounts, etc). Also had a fresh oil and filter change and flushed the coolant.

I'm sitting at just shy of 98k and as far as I know, my fluids are original. CarFax says that my trans was replaced at 48k by BMW (although I have no confirmation of this) so I want to change my drive line fluids but I want to ensure I'm using the right stuff. I have done some research and read that a flush is ultimately the death of the trans but fluid and filter change is good maintenance.

So what I'm looking for is some people to chime in to make sure I'm getting everything I need and that it is correct. I leave 2/27 so I will need to order everything as soon as possible to have it completed prior to the trip.

Transmission:
Filter kit: Bav Auto Part number B2400001

Fluid: LIFEGUARD5 ZF Lifeguard 5 fluid - For 5 speed automatic transmissions - 6 liters

I think the only thing I'm missing is the filter O ring which I can just order at the dealer. Do the bolts holding the pan need to be replaced as well?

Front / Rear Diff:

Redline 75w-90 - BMW E53 X5 M62 4.6L Drivetrain Differential - 8352257904 - Manual Transmission / Differential Fluid 75w90 - 1 Quart - ES#10752 3 quarts or is 2 enough?

Drain / fill plug - BMW E53 X5 M62 4.6L Drivetrain Differential - 33117525064 - Differential Oil Drain / Check Plug - Priced Each - ES#205597 Is this the same for the front?

Transfer Case:
Transfer case service kit: BMW E53 X5 M62 4.6L Drivetrain Transfer Case - 27111226467KT - Pre-XDrive Transfer Case Service Kit - ES#2528669 , I just want to confirm I'm getting everything I need at one full shot since time is limited. If theres anything I missed, please post it up!